东汉末年，世道离乱，十常侍祸乱后宫，危及朝廷，娃娃皇帝接连遇害，外戚只手遮天，专权其上。西凉军阀董卓（滝口顺平 配音）趁机入主洛阳，戕害大臣，其义子吕布奉先（津嘉山正種 配音）更是以一当百的军神。在外则有张角（乡里大辅 配音）领导的黄巾军打着“苍天已死，黄天当立，岁在甲子，天下大吉”的旗帜掀起农民起义。世道离乱，群雄逐鹿。中山靖王之后刘备（あおい輝彦 配音）在命运的感召下，与关羽（青野武 配音）、张飞（石田太郎 配音）相逢，最终桃园三结义，加入了群雄争霸的浪潮。
曹操（渡哲也 配音）、袁绍、袁术、公孙瓒等各路豪杰相继登上历史舞台，从而拉开了三国争霸的序幕……

War rages between the Galactic Empire and the Free Planets Alliance. With two new brilliant young leaders at the helm, anything can happen in this military space opera.

For the past 150 years, humanity’s two greatest nations have been deadlocked in a meaningless war. In what is hoped to be a miraculous victory, the Alliance embarks on a battle to break through the Empire’s frontline. Like many other “decisive” battles, this can only end in disaster; a sentiment shared by Imperial nobleman Reinhard von Lohengramm and Alliance Commodore Yang Wen Li, both of whom realize how to turn the fight in their favor. And while the tides of war may never change, these two men must rise to the occasion, solidifying their place in history as heroes.